Julitar70
Julitar70
15-08-2016
Mathematics
contestada
How to solve cot x cos2x=2cot x
Respuesta :
princegn
princegn
15-08-2016
cotxcos2x = 2cotx
cos2x = 2cotx/cotx
cos2x = 2
cos2x = 2cos²x - 1
2cos²x - 1 = 2
2cos²x = 2+1
2cos²x = 3
cos²x = 3/2
√cos²x = plus minus √(3/2)
cosx = plus minus √(3/2)
Answer Link
Panoyin
Panoyin
15-08-2016
cot(x)cos(2x) = 2cot(x)
cot(x) cot(x)
cos(2x) = 2
It is undefined.
Answer Link
VER TODAS LAS RESPUESTAS ( 21+ )
Otras preguntas
can someone help please
Can you help me with these too? its for a geometry final practice plisss
PLEASE ANSWER ASAP THANK YOU ! The equation of circle C is (x+2)2+(y−3)2=25. If circle D is concentric with circle C and has a radius of 3, what is the equatio
Serena makes $9 per hour cutting lawns. Each day, she earns about $15 in tips. lf Serena made no less than $110 on Monday, which inequality represents h, the nu
A person who wishes to attend a U.S. university and then return to their home country would apply for naturalization an immigrant visa a non-immigrant visa a gr
Help me on math work please.
What is the result of 54,000 X 1,200 written in scientific notations
a) Describe the author’s main argument about efforts to establish a global “human rights standard.”
Is lettuce a leaf plant?
Which strategy is used by public health to reduce the incidence of f? O A. Disease diagnosis B. Hospitalization O c Drug therapy O D. Hygiene education PREVIOUS
